第66章知识
three parts of powdered coal, composed the substance, which was placed in crucibles. when the high temperature of the oven had reduced it to a liquid, or rather a pasty state, cyrus harding collected with the tube a quantity of the paste: he turned it about on a metal plate, previously arranged, so as to give it a form suitable for blowing, then he passed the tube to herbert, telling him to blow at the other extremity.m.
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